COMPUTER NETWORKING

Detailed explanation-1: -Devices in an IP network are identified by an IP address, which can be dynamically assigned and may change over time. Traditionally, the network device most associated with Layer 3 has been the router, which allows you to connect devices to different IP networks.

Detailed explanation-2: -Why use a Layer 3 switch? Layer 3 switches make the use of virtual local area networks (VLANs) and interVLAN routing easier and faster. They make VLANs easier to configure because a separate router isn’t required between each VLAN; all the routing can be done right on the switch.

Detailed explanation-3: -Layer 3 switch, or multilayer switch, can do all the job of a layer 2 switch and additional static routing and dynamic routing as well. That means, a Layer 3 switch has both MAC address table and IP routing table, and handles intra-VLAN communication and packets routing between different VLANs.